Patents by Inventor Mitsugu Hanabusa
Mitsugu Hanabusa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7724951Abstract: Upon processing a visible light image signal and infrared image signal respectively obtained by illuminating a transparent document with light beams coming from a visible light lamp for mainly emitting visible light and an infrared lamp for mainly emitting infrared light, and photoelectrically converting optical images of the transparent document, a histogram is generated on the basis of the infrared image signal, a threshold value is calculated based on the histogram, and infrared image signal components equal to or smaller than the threshold value are extracted by comparing the calculated threshold value and infrared image signal components. Visible light image signal components corresponding to the extracted infrared image signal components are interpolated using surrounding visible light image signal components.Type: GrantFiled: April 9, 2007Date of Patent: May 25, 2010Assignee: Canon Kabushiki KaishaInventors: Tsutomu Takayama, Mitsugu Hanabusa, Atsuko Kashiwazaki, Kengo Kinumura
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Patent number: 7428080Abstract: This invention has as its object to obtain a high-quality read image from which dust or scratches have been removed by an image reading apparatus which reads image information on a transparent original by synchronously scanning a light source unit and image reading unit. To this end, upon reading a transparent original, infrared LED chips on a dust/scratch detection LED substrate and a transparent original illumination lamp are turned on to make alignment between the LED substrate and the image reading unit, and dust/scratch detection image information is obtained by synchronously moving the light source unit and image reading unit in the subscanning direction. Subsequently, alignment between the transparent original illumination lamp and image reading unit is made, and image information of the transparent original is obtained by synchronously moving the light source unit and image reading unit in the subscanning direction.Type: GrantFiled: February 5, 2003Date of Patent: September 23, 2008Assignee: Canon Kabushiki KaishaInventors: Masato Koshimizu, Mitsugu Hanabusa
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Patent number: 7391928Abstract: An image reading apparatus having a visible light source for emitting visible light, an invisible light source for emitting invisible light, an imaging optical system for irradiating a document by these light sources to form optical images of the document, and a CCD for photoelectrically converting the optical images of the document turns on the visible light source to acquire a visible light image signal by the CCD. Then, the apparatus turns on the invisible light source to acquire an invisible light image signal by the CCD. After the invisible light image signal is acquired, the apparatus turns off the invisible light source, and turns on the visible light source regardless of whether to read the document.Type: GrantFiled: February 6, 2007Date of Patent: June 24, 2008Assignee: Canon Kabushiki KaishaInventors: Tsutomu Takayama, Mitsugu Hanabusa, Atsuko Kashiwazaki, Kengo Kinumura
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Publication number: 20070189636Abstract: Upon processing a visible light image signal and infrared image signal respectively obtained by illuminating a transparent document with light beams coming from a visible light lamp for mainly emitting visible light and an infrared lamp for mainly emitting infrared light, and photoelectrically converting optical images of the transparent document, a histogram is generated on the basis of the infrared image signal, a threshold value is calculated based on the histogram, and infrared image signal components equal to or smaller than the threshold value are extracted by comparing the calculated threshold value and infrared image signal components. Visible light image signal components corresponding to the extracted infrared image signal components are interpolated using surrounding visible light image signal components.Type: ApplicationFiled: April 9, 2007Publication date: August 16, 2007Inventors: TSUTOMU TAKAYAMA, Mitsugu Hanabusa, Atsuko Kashiwazaki, Kengo Kinumura
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Patent number: 7245784Abstract: An image reading apparatus having a visible light source for emitting visible light, an invisible light source for emitting invisible light, an imaging optical system for irradiating a document by these light sources to form optical images of the document, and a CCD for photoelectrically converting the optical images of the document turns on the visible light source to acquire a visible light image signal by the CCD. Then, the apparatus turns on the invisible light source to acquire an invisible light image signal by the CCD. After the invisible light image signal is acquired, the apparatus turns off the invisible light source, and turns on the visible light source regardless of whether to read the document.Type: GrantFiled: August 3, 2005Date of Patent: July 17, 2007Assignee: Canon Kabushiki KaishaInventors: Tsutomu Takayama, Mitsugu Hanabusa, Atsuko Kashiwazaki, Kengo Kinumura
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Publication number: 20070127841Abstract: An image reading apparatus having a visible light source for emitting visible light, an invisible light source for emitting invisible light, an imaging optical system for irradiating a document by these light sources to form optical images of the document, and a CCD for photoelectrically converting the optical images of the document turns on the visible light source to acquire a visible light image signal by the CCD. Then, the apparatus turns on the invisible light source to acquire an invisible light image signal by the CCD. After the invisible light image signal is acquired, the apparatus turns off the invisible light source, and turns on the visible light source regardless of whether to read the document.Type: ApplicationFiled: February 6, 2007Publication date: June 7, 2007Inventors: Tsutomu Takayama, Mitsugu Hanabusa, Atsuko Kashiwazaki, Kengo Kinumura
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Patent number: 7224483Abstract: In a method of controlling an image reading apparatus, which has an illumination unit adapted to irradiate an object with first and second light rays in different frequency ranges, and a light-receiving unit adapted to receive light coming from the object, and to output a signal, and reads an image of the object by moving the illumination unit and light-receiving unit relative to the object, the light-receiving unit outputs a first signal in response to irradiation with the first light ray, and outputs a second signal in response to irradiation with the second light ray.Type: GrantFiled: January 24, 2003Date of Patent: May 29, 2007Assignee: Canon Kabushiki KaishaInventors: Mitsugu Hanabusa, Tsutomu Takayama
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Patent number: 7088477Abstract: This invention has an object of reading a high-quality image by detecting and correcting dust or scratches present on a transparent original in an image reading apparatus for reading, e.g., a transparent original. To achieve this object, an original illumination unit in the image reading apparatus for reading an original includes at least a first light source for emitting light in a visible region, a second light source for emitting light in a n invisible region, and a light guide plate which has these light sources arranged at end faces and has first and second light guide patterns for guiding light beams from the first and second light sources to the entire light-emitting surface.Type: GrantFiled: March 13, 2002Date of Patent: August 8, 2006Assignee: Canon Kabushiki KaishaInventors: Masato Koshimizu, Tsutomu Takayama, Mitsugu Hanabusa, Kengo Kinumura
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Patent number: 7006705Abstract: An image reading apparatus having a visible light source for emitting visible light, an invisible light source for emitting invisible light, an imaging optical system for irradiating a document by these light sources to form optical images of the document, and a CCD for photoelectrically converting the optical images of the document turns on the visible light source to acquire a visible light image signal by the CCD. Then, the apparatus turns on the invisible light source to acquire an invisible light image signal by the CCD. After the invisible light image signal is acquired, the apparatus turns off the invisible light source, and turns on the visible light source regardless of whether to read the document.Type: GrantFiled: March 13, 2002Date of Patent: February 28, 2006Assignee: Canon Kabushiki KaishaInventors: Tsutomu Takayama, Mitsugu Hanabusa, Atsuko Kashiwazaki, Kengo Kinumura
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Publication number: 20050275909Abstract: An image reading apparatus having a visible light source for emitting visible light, an invisible light source for emitting invisible light, an imaging optical system for irradiating a document by these light sources to form optical images of the document, and a CCD for photoelectrically converting the optical images of the document turns on the visible light source to acquire a visible light image signal by the CCD. Then, the apparatus turns on the invisible light source to acquire an invisible light image signal by the CCD. After the invisible light image signal is acquired, the apparatus turns off the invisible light source, and turns on the visible light source regardless of whether to read the document.Type: ApplicationFiled: August 3, 2005Publication date: December 15, 2005Inventors: Tsutomu Takayama, Mitsugu Hanabusa, Atsuko Kashiwazaki, Kengo Kinumura
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Patent number: 6796502Abstract: In an image reading apparatus for reading a transparent original, the object of the present invention is to obtain a high-quality read image from which dust or scratch is removed. In order to achieve this object, in the image reading apparatus for reading the transparent original, a transparent original illumination unit has the first and second surfaces on the same side. On the first surface, at least one light source for emitting light in at least a visible range is arranged. On the second surface, at least one light source including a plurality of infrared light sources arrayed in series to emit light in an infrared range is arranged. The first and second surfaces are arranged at positions different from an effective light-emitting region, and includes a light guide plate and reflecting sheet for substantially uniformly emitting incident light from the same side portion to an entire surface.Type: GrantFiled: February 6, 2003Date of Patent: September 28, 2004Assignee: Canon Kabushiki KaishaInventors: Ryuji Nogami, Mitsugu Hanabusa
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Publication number: 20030174371Abstract: This invention has as its object to obtain a high-quality read image from which dust or scratches have been removed by an image reading apparatus which reads image information on a transparent original by synchronously scanning a light source unit and image reading unit. To this end, upon reading a transparent original, infrared LED chips on a dust/scratch detection LED substrate and a transparent original illumination lamp are turned on to make alignment between the LED substrate and the image reading unit, and dust/scratch detection image information is obtained by synchronously moving the light source unit and image reading unit in the subscanning direction. Subsequently, alignment between the transparent original illumination lamp and image reading unit is made, and image information of the transparent original is obtained by synchronously moving the light source unit and image reading unit in the subscanning direction.Type: ApplicationFiled: February 5, 2003Publication date: September 18, 2003Inventors: Masato Koshimizu, Mitsugu Hanabusa
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Publication number: 20030150918Abstract: In an image reading apparatus for reading a transparent original, the object of the present invention is to obtain a high-quality read image from which dust or scratch is removed. In order to achieve this object, in the image reading apparatus for reading the transparent original, a transparent original illumination unit has the first and second surfaces on the same side. On the first surface, at least one light source for emitting light in at least a visible range is arranged. On the second surface, at least one light source including a plurality of infrared light sources arrayed in series to emit light in an infrared range is arranged. The first and second surfaces are arranged at positions different from an effective light-emitting region, and includes a light guide plate and reflecting sheet for substantially uniformly emitting incident light from the same side portion to an entire surface.Type: ApplicationFiled: February 6, 2003Publication date: August 14, 2003Inventors: Ryuji Nogami, Mitsugu Hanabusa
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Publication number: 20030142371Abstract: In a method of controlling an image reading apparatus, which has an illumination unit adapted to irradiate an object with first and second light rays in different frequency ranges, and a light-receiving unit adapted to receive light coming from the object, and to output a signal, and reads an image of the object by moving the illumination unit and light-receiving unit relative to the object, the light-receiving unit outputs a first signal in response to irradiation with the first light ray, and outputs a second signal in response to irradiation with the second light ray.Type: ApplicationFiled: January 24, 2003Publication date: July 31, 2003Applicant: CANON KABUSHIKI KAISHAInventors: Mitsugu Hanabusa, Tsutomu Takayama
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Publication number: 20020168116Abstract: An image reading apparatus having a visible light source for emitting visible light, an invisible light source for emitting invisible light, an imaging optical system for irradiating a document by these light sources to form optical images of the document, and a CCD for photoelectrically converting the optical images Of the document turns on the visible light source to acquire a visible light image signal by the CCD. Then, the apparatus turns on the invisible light source to acquire an invisible light image signal by the CCD. After the invisible light image signal is acquired, the apparatus turns off the invisible light source, and turns on the visible light source regardless of whether to read the document.Type: ApplicationFiled: March 13, 2002Publication date: November 14, 2002Inventors: Tsutomu Takayama, Mitsugu Hanabusa, Atsuko Kashiwazaki, Kengo Kinumura
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Publication number: 20020131094Abstract: This invention has an object of reading a high-quality image by detecting and correcting dust or scratches present on a transparent original in an image reading apparatus for reading, e.g., a transparent original. To achieve this object, an original illumination unit in the image reading apparatus for reading an original includes at least a first light source for emitting light in a visible region, a second light source for emitting light in a n invisible region, and a light guide plate which has these light sources arranged at end faces and has first and second light guide patterns for guiding light beams from the first and second light sources to the entire light-emitting surface.Type: ApplicationFiled: March 13, 2002Publication date: September 19, 2002Inventors: Masato Koshimizu, Tsutomu Takayama, Mitsugu Hanabusa, Kengo Kinumura
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Publication number: 20020048411Abstract: Upon processing a visible light image signal and infrared image signal respectively obtained by illuminating a transparent document with light beams coming from a visible light lamp for mainly emitting visible light and an infrared lamp for mainly emitting infrared light, and photoelectrically converting optical images of the transparent document, a histogram is generated on the basis of the infrared image signal, a threshold value is calculated based on the histogram, and infrared image signal components equal to or smaller than the threshold value are extracted by comparing the calculated threshold value and infrared image signal components. Visible light image signal components corresponding to the extracted infrared image signal components are interpolated using surrounding visible light image signal components.Type: ApplicationFiled: June 14, 2001Publication date: April 25, 2002Inventors: Tsutomu Takayama, Mitsugu Hanabusa, Atsuko Kashiwazaki, Kengo Kinumura
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Publication number: 20020018247Abstract: In order to provide an image processing apparatus which can satisfy both requirements for the balance between a storage time in a high-resolution mode and that in a low-resolution mode and high-speed reading operation in the low-resolution mode, the image processing apparatus of this invention includes an image sensing unit which includes a first element array having a plurality of photoelectric conversion elements arranged in a line, and a second element array shifted from the first element array by a predetermined distance in a main scanning direction and having a plurality of photoelectric conversion elements arranged in a line, and outputs signals of the first and second element arrays from a single output portion, and a driving unit having a first mode of reading signals from the second element array and continuously outputting the signals from the output portion, and a second mode of reading signals from the first element array and continuously outputting the signals from the output portion.Type: ApplicationFiled: June 26, 2001Publication date: February 14, 2002Inventor: Mitsugu Hanabusa
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Patent number: 6057233Abstract: To produce a high quality thin film by effectively removing the particles from the emitted substance and the oxygen retained under a high vacuum during the production of the thin film by laser ablation, there is provided a process for producing a thin film on a substrate by laser ablation in a vacuum chamber in which a laser beam is irradiated to a target to cause emission of a substance from the target and allowing the emitted substance to deposit on the substrate to grow a thin film on the substrate by laser ablation, the process including irradiating an ion beam to at least one of the substrate and a plume of the emitted substance formed between the substrate and the target.Type: GrantFiled: January 14, 1997Date of Patent: May 2, 2000Assignees: Toyota Jidosha Kabushiki Kaisha, Mitsugu HanabusaInventors: Naoki Nakamura, Hiroshi Hasegawa, Mitsugu Hanabusa
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Patent number: 3934570Abstract: Capacitor discharge ignition system for a spark-ignition internal combustion engine. The ignition system employs an ignition coil having primary and secondary windings wound on a ferromagnetic core, preferably made of a ferrite material. A first capacitor is connected in series with a spark gap and this series combination is connected across the ignition coil secondary winding. The ignition coil primary winding has a second capacitor coupled to it which capacitor is charged and then discharged in timed relation to engine operation. The first capacitor and ignition coil windings and construction are selected such that the second capacitor when discharged through the ignition coil primary winding produces ferroresonant oscillations in the secondary circuit of the ignition coil. This breaks down the spark gap and an alternating voltage, at the ferroresonant frequency, occurs.Type: GrantFiled: April 24, 1974Date of Patent: January 27, 1976Assignee: Ford Motor CompanyInventors: Joseph R. Asik, Mitsugu Hanabusa